NEET Solved Paper 2018 Question 69
Question: A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by [NEET - 2018]
Options:
A) Only grandchildren
B) Only sons
C) Only daughters
D) Both sons and daughters
Show Answer
Answer:
Correct Answer: D
Solution:
- When a woman with an X-linked condition has children, each child has a 50% chance of inheriting the affected X chromosome. This means that both sons and daughters can inherit the X chromosome with the condition.
- Sons inherit one X chromosome from their mother and one Y chromosome from their father. If they inherit the affected X chromosome from their mother, they will express the condition because they do not have a second X chromosome to potentially counteract the effect.
- Daughters inherit one X chromosome from their mother and one X chromosome from their father. If they inherit the affected X chromosome from their mother, they may or may not express the condition, depending on whether the other X chromosome carries a normal copy of the gene.
BETA
